Water-purifier.



M. B. CRESSWELL.

WATER PURIFIER.

APPLICATION men APR.4, 1914.

Patented Nov. 2, 1915.

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Patented Nov. 2, 1915.

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COLUMBIA PLANDORAPH c0 wASHlNu'mN, D. C.

MILTON B. CBESSWELL, or nnsiviomns, IOWA.

WATER-PURIFIER.

Application fi1er 1 Apri1 4, 1914. Serial No. 830,065.

To all whom it may concern: 1

Be it known that I, MiLToN B. Cnnsswnmi', citizen of the United States of America, and resident of Des Moines, Polk county, Iowa, have invented a new and useful Ivater-Purifier, of which the following is a specification.

The object of this invention is to provide an improved construction for a water purifier adapted to separate oiland organic matter from the water.

A further object of this invention is to provide a structure with a plurality of operating units, adapted to be cleaned without stopping the operation of all of the units.

A further object of this invention 1s to provide an improved arrangement of heat ing coils and partitions.

A further object of this invention is to provide improved connections between adjacent compartments.

My invention consists in the construction,-

arrangement and combination of elements hereinafter set forth, pointed out 1n my claims and illustrated by the accompanymg drawing, in which- Figure 1 is a plan of the complete machine. Figs. 2, 3 and 4 are vertical sectlons on the lines 22, 33 and 1 1 of Fig. 1, respectively.

In the construction of the device as shown the numeral 10 designates generally a tank or pan, which is open at its top, preferably rectangular in form and made of sheet metal or other suitable material. Partitions 11, 12, 13, 14, in this instance four in number, divide the tank 10 into a plurality of boiling compartments A, B, C, D, E. Cross partitions 15, 16 extend acrossthe ends of the boiling compartments and form cooling chambers (1,7), 0, (Z, c and skimming cham-.

bers a, Z), 0, ,(Z' c. A plurality of openings 17 are formed in the partitions 15 and establish communication between the boiling com partments A, B,'C, D, E and the respective cooling chambers a, b, 0, d, c. A plurality of:

openings 18 are formed in the partitions 16 and establish communication between the cooling chambers 64, b, 0, (Z, 6 and the respective skimming chambers a, Z), 0, d, e. The openings 17, 18 preferably extend to the top but notto the bottom of the partitions 15, 16 in which they are formed. The partitions15, 16 preferably do'not reach to the top of the tank 10. A steam pipe 19 7 leads from a source of supply (not shown) Specification of Letters Patent.

Patented Nov. 2, 1915.-

and traverses that side of the tank 10 (hereinafter called the forward side) opposite to the partitions 15, 16. Branches 20, 21, 22, 23, 24 lead from the steam pipe 19 to the various boiling compartments A, B, C, D, E of the tank 10, and are controlled respec tively by valves 25, 26, 2,7, 28, 29. A major coil 30 lies on the bottom of each boiling compartment and connected to one of the branch pipes 20 to 24: inclusive, through a vertically arranged portion 3O at the front of the tank. The major coils 30 start adj a cent the forward ends of the boiling com- 33 leads upwardly from the extremity of.

the minor coil 31 to the top of the tank, leads rearwardly above the pipe 32, turns at right angles and runs transversely adjacent the partition 15, and opens downwardly into the compartment A. Each exhaust pipe 33 is controlled by a valve 34, adjacent its end. In the initial boiling compartment A the minor coil 31 terminates in a transverse pipe 35 formed with forwardly directed jet openings 36 and closed at its end a cap 37*.

It is the function of the pipes 33 and 35 to discharge water of condensation from the coils 30, 31 to the boiling compartment A where it is subjected to the boiling operation.

A water supply pipe 37 leads from a source of supply (not shown) and traverses the forward side of the tank 10. The water pipe 37 is formed with branches 38, controlled by valves 39, leading to the ends ofthe boiling compartments B, C, D and E. The pipe 37 turns at right angles and extends along the side of the initial boiling compartment A, turns again and enters the sideof said compartment, and is again turned at right angles and has. pivoted thereto an inlet pipe 40 which opens toward the forward end of said compartment and the coils therein. An open ended pipe 41 leads through each partition 11, 12, 13, 14 from a cooling chamber a, Z), c or (Z, turns at right angles and passes forwardly through the partition 15 and enters a boiling compartment B, C, D or E. The pipes 41 are sealed to water-tight condition where they pass through the partitions 11, 12, 13, 14

and 15. An inlet pipe 42 is pivoted at its lower end to the extremity of each pipe 41, and communicates therewith. The inlet pipes 42 are adapted normally to complete communication between the chambers a-B, Z)C, D, and cZ'E; and at times to be turned to upright position to shut off such communication. A drain pipe 43 traverses the rear side of the tank and has branch pipes 44 leading from the various skimming chambers a, b, 0, d, 6, said draln plpe leading to a desired place of discharge (not shown) such as a sewer connection. An automatic floating skimmer 45 is mounted in upright position in eachskimming chamber and is swiveled at its lower end and commu- .I11C2ti38S w1th a branch drain pipe 44. The

skimmers here shown are illustrated and described in detail in Letters Patent of the United States Number 950,439 granted to me February 22, 1910, to which patent reference hereby is made. It is the function of the Skimmers 45, which are adjustable relative to the water level and automatically adjusting with such level, to take scum and floating impurities from the surface of the water same away through the drain pipes.

H initial boiling compartment A through the pipe 37 and inlet pipe 40 to the level of about six inches. Then live steam is admitted to the coils 30, any or all of them, by opening the valves 25, 26, 27, 28, 29, passes through the pipes 32, and enters the coils 31. The presence of the live steam in the coils 30, 31 and pipes 32 heats the water in the boiling compartments and raises'the temperature thereof to the boiling point. The arrangement of the coils causes the greatest amount of'heat to be radiated at the forward end of the tank, and a current is created which rises to the surface and flows rearwardly in each boiling compartment. The presence of live steam in the pipe 32 causes a greater amount of heat to be radiatedat one side of the compartment than at the other, and the current is thereby deflected to one side, or toward the openings 17.

7 It will be noted that the openings 17 are located at that side of the boilingcompartment opposite to the location of the pipe 32, and further that the openings 18 are on the same side as the pipe 32, or staggered relative to the openings 17. By this means the current is stilled to a certain extent in the cooling chambers, because the direct flow is broken up or diverted. The current passes within the skimming chamber and is freed of a portion of its floating impurities by the skimmer therein, and then returns as an undercurrent toward the forward end of the boiling compartment, after which the operation is repeated. Water may be admitted to the other boiling compartments in turn through the connecting pipes 41 by lowering the inlet pipes 42 to horizontal position as shown, and the operation is repeated in such compartments as it passes from one compartment to another until the water is freed from all oleaginous substances and organic matter, after which it may be drawn oil through the discharge pipes 47.

When a deposit of sediment has accumulated on the bottom of the tank, as will. occur after continued usage, the compartments may be cleaned in turn, beginning with the compartment A. To this end the inlet pipe 40 is raised to vertical position, the inlet pipe 42 in the compartment 13 is raised to vertical position, and the water pipe 38 leading to said compartment B is opened by manipulation of the valve 39. The operation of boiling and purifying water is carried on in the compartments B, C, D and E, and in the meantime the compartment A, together with the chambers a and a, may be drained and cleaned. This may be repeated for each of the compartments in turn, after which the operation is carried on in all of the compartments as previously described. In this way the tank may be cleaned and renovated without stopping the operation or loss of time.

I claim as my invention 1. A water purifier, comprising a tank formed with a plurality of boiling compartments, a major steam coil at one end of each boiling compartment, a minor coil mounted on the forward end of each major coil, a pipe connecting the major and minor coils and extending along one side of each boiling compartment, a still chamber at the end of each boiling compartment opposite to the steam coils therein, water communication between said still chamber and the boiling, compartment on the side thereof opposite to the pipe connecting the steam coils, a skimming chamber provided with skimming means and communicating with each still chamber, valve-controlled water pipes leading to each boiling compartment, and closable communication between each unit and the next succeeding unit.

2. A water purifier, comprising a tank formed with a plurality of boiling compartments, a major steam coil at one end of each boiling compartment, a minor coil mounted on the forward end of each major coil, a steam pipe connecting the major and minor coils and extending along one side of each boiling compartment, an exhaust pipe leading from each minor coil and opening to the initial boiling compartment, a still chamber at the end of each boiling compartment opposite to the steam coils therein, water communication between the boiling compartment and its skimming chamber, a skimming chamber with skimming means and communicating with each still chamber, the communication between the still chamber and boiling compartment being staggered relative to the location of the steam connecting pipe in the boiling chamber and also staggered relative to the opening between the still chamber and skimming chamber,

valve-controlled water pipes leading to each boiling compartment, and closable communication between each still chamber and the boiling compartment of the next succeeding unit.

3. A water purifier, comprising a tank formed with a plurality of boiling'compartments, steam pipes in each boiling compartment, a still chamber at one end of and communicating with each boiling compartment, a skimming chamber beyond and communicating with each still chamber, skimming devices in each skimming chamber, a

valve-controlled water pipe leading to each boiling compartment, and closable water communication between each unit and the next succeeding unit, such communication comprising a horizontal open ended pipe leading from the still chamber to the boiling compartment, and an inlet-pipe pivoted to said horizontal pipe and adapted to be raised to vertical position.

4. A water purifier, comprising a tank formed with a boiling compartment, a major steam coil at one end of said boiling compartment, a minor coil mounted on the forward end of said major coil, a pipe connecting the major and minor coils and extending along one side of said boiling compartment, a still chamber at the end of said boiling compartment opposite to the steam coils therein, water communication between said still chamber and the boiling compartment on the side thereof opposite to the pipe connecting the steam coils, a skimming chamber communicating with said still chamber, and skimming means in said skimming chamber.

Signed by me at Des Moines, Iowa, this twentieth day of December, 191.3.

MILTON B. CRESSWELL. Witnesses:

EARL M. SINCLAIR,

W. W. F INK.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

